| Popis: |
Using a charged particle oscillator He II discharge lamp, we have obtained high resolution 40.8 cV photoelectron spectra of the 3d core levels of Zn and Ga in Me2Zn and Me3Ga respectively, and the Pb 5d core levels in Et4Pb. The overall instrumental resolution is between 25 meV and 40 meV for all spectra. Inherent core level widths for the Zn 3d (⩽0.025 eV), Ga 3d (⩽0.15 eV) and Pb 5d (⩽0.32 eV) energy levels have been obtained from these spectra. The Me2Zn and Me3Ga spectra consists of five peaks due to the combined effects of spin orbit coupling and large non-cubic ligand fields (the C02 term in the crystal field expansion). In contrast, the Et4Pb 5d spectrum shows no appreciable ligand field splitting, as expected for a tetrahedral molecule. |
